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Finding the Fourth Proportional to 257,172.72, 385,755.48 and 155,994.84

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Solution

The fourth proportional to 257,172.72, 385,755.48 and 155,994.84 is: 233,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,172.72 : 385,755.48 = 155,994.84 : x
  2. Step 2: Convert to fraction form
    257,172.72/385,755.48 = 155,994.84/x
  3. Step 3: Cross multiply
    257,172.72x = 385,755.48 × 155,994.84
  4. Step 4: Simplify right side
    257,172.72x = 60,175,864,381.72
  5. Step 5: Solve for x
    x = 60,175,864,381.72/257,172.72
  6. Step 6: Final answer
    x = 233,990.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.